Here is my weekly weather quiz question for the last time. What is  “Air Stagnation?” Here is the correct answer. Air Stagnation is a meteorological situation in which there is a major buildup of air pollution in the atmosphere. This usually occurs when the same air mass is parked over the same area for several days. During this time, the light winds cannot “cleanse” the buildup of smoke, dust, gases, and other industrial air pollution. I’ll have a new weekly weather quiz question for you starting Monday. Please remember to post your answer at the bottom of this page. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs.  Good luck.

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An Upper Level Low Pressure Trough (Shaded “U” shape with blue arrows) is controlling our weather for the foreseeable future. The graphic for days 1-3 shows the frontal system moving in and to the north warming us and keeping us in showers. The graphic for days 3-7 shows very active complex frontal systems heading our way next week. For mountain snow conditions at the local ski areas check out their websites or give them a call.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 17 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 34 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Data courtesy of Lane Regional Air Protection Agency (LRAPA)

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Advisories:

• A WINTER STORM WARNING IS IN EFFECT UNTIL 4 PM TODAY FOR THE CENTRAL COLUMBIA RIVER GORGE AND THE UPPER HOOD RIVER VALLEY.
• A WINTER STORM WATCH IS IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY MORNING FOR THE NORTH OREGON COAST, THE CENTRAL OREGON COAST AND THE LOWER COLUMBIA, THE GREATER PORTLAND METRO AREA, THE CENTRAL WILLAMETTE VALLEY, THE SOUTH WILLAMETTE VALLEY, THE WESTERN COLUMBIA RIVER GORGE, THE CENTRAL COLUMBIA RIVER GORGE, AND THE UPPER HOOD RIVER VALLEY.
• A WINTER STORM WATCH IS IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY AFTERNOON FOR THE COAST RANGE OF NORTHWEST OREGON, THE CENTRAL COAST RANGE OF WESTERN OREGON, THE NORTHERN OREGON CASCADE FOOTHILLS, THE CASCADE FOOTHILLS IN LANE COUNTY, THE NORTHERN OREGON CASCADES, AND THE CASCADES IN LANE COUNTY.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 6 AM SUNDAY FOR THE NORTHERN OREGON CASCADES.
• A HIGH WIND WATCH IS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING FOR THE SOUTH CENTRAL OREGON COAST AND THE CURRY COUNTY COAST.
• A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 4 AM SUNDAY FOR THE SOUTH CENTRAL OREGON CASCADES.
• A HIGH WIND WATCH IS IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY MORNING FOR NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
• A Permanent Health Advisory remains in effect for the South Umpqua River and Lawson Bar. Pools in the bedrock along the rivers edge are known to develop Blue-green Algae (cyanobacterial) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted along several access areas along the river.

 

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Mostly cloudy and a bit warmer with rain today (0.50 in. of rain possible) and tonight (0.50 in. of rain possible),
• Rain heavy at times possibly mixing with or changing to snow Sunday afternoon and evening (1.00 in. of rain possible), rain and snow and colder at night (0.50 in. of rain possible),
• Cloudy with AM rain and snow, showers likely (70%) and a bit cooler Monday afternoon (snow level 1,500 ft.), then cloudy with a good (50%) chance of showers Monday night.
• highs 50-40 lows 44-33 Monday night.
• Mostly cloudy and a bit cooler with a good (50%) chance of rain Tuesday, a (40%) chance of rain at night,
• Cloudy and a bit warmer with rain likely (70%) Wednesday through Thursday, then showers likely (70%) Thursday night and Friday (a bit cooler).
• highs 42-52 cooling to 47 Friday lows 34-38. (seasonal averages high 50 low 35)

 

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Forecast for Roseburg:

• Mostly cloudy with showers and a bit cooler today, rain tonight (0.25 in. of rain possible),
• Rain and breezy (Wind: S 15-25 mph) Sunday, rain Sunday night (snow level 3,500 ft. late Sunday night),
• Cloudy with AM rain and snow showers, rain and snow showers likely (70%) and a bit cooler Monday afternoon, then a (30%) chance of rain and snow showers at night.
• highs 53-56 cooling to 43 Monday lows near 43-35.
• Cloudy with rain and snow likely (70%) and a bit warmer Tuesday, a (40%) chance of rain at night,
• Rain likely (70%) and a bit warmer Wednesday, cloudy with a good (50%) chance of rain at night,
• Mostly cloudy and a bit warmer with rain likely (70%) Thursday, cloudy with a (40%) chance of rain Thursday night,
• Then cloudy and a bit cooler with a (40%) chance of showers Friday.
• highs 47-58 cooling to 54 Friday lows 42-47 cooling back to 42 Thursday night. (seasonal averages high 52 low 37)

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Forecast for The South Central Oregon Coast Including Coos Bay and North Bend:

• Mostly cloudy with showers today (0.50 in. of rain possible), rain tonight (0.75 in. of rain possible) and windy (Wind: SW 20-30 mph at the shore while S 10-20 mph inland),
• Rain Sunday () and windy (Wind: S 25-35 at the shower while S 15-25 mph inland), rain at night, heavy at times in the evening (1.00 in. of rain possible Sunday and Sunday night), breezy Sunday night (Wind W 20-30 mph at the shore NW 15-25 mph in the evening and NW 10 mph late at night while W 10-20 mph inland),
• Mostly cloudy coastal showers and a bit cooler Monday while AM inland rain and snow showers and inland rain and snow showers in the afternoon (snow level 1,500 ft.), then mostly cloudy with a (40%) chance of showers Monday night.
• highs 53-55 cooling to 47 Monday lows 46-40.
• Cloudy and a bit warmer with rain likely (70%) Tuesday, cloudy with a good (50%) chance of rain Tuesday night,
• Mostly cloudy with rain likely (70%) and a bit warmer Wednesday through Thursday, cloudy with a good (50%) chance of rain at night,
• Then mostly cloudy and a bit cooler with a good (50%) chance of showers Friday.
• highs 50-57 cooling to 54 Friday lows 44-50 cooling to 45 Thursday night. (seasonal averages high 52 low 40)

 

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Forecast for the Cascades in Lane County:

• Rain and snow today (0.50 in. of rain possible,1-4 in. of snow possible), rain and snow tonight (0.50 in. of rain possible, 2-5 in. of snow possible) and breezy (Wind: SW 15-25 mph gusts to 40 mph),
• Cloudy with AM rain and snow Sunday and breezy (Wind: SW 15-25 mph gusts to 40 mph), a bit warmer in the afternoon, rain and snow and colder Sunday night and breezy (Wind: S 15-25 mph gusts to 35 mph),
• Mostly cloudy and a bit cooler with snow showers Monday, then cloudy with a good (50%) chance of snow showers Monday night.
• snow level 4,500 ft. today and tonight, 5,000 ft. Sunday, 4,500 ft. Sunday night, then at the surface Monday and Monday night.
• highs 35-38 cooling to 26 Monday lows 30-19.
• Cloudy with snow likely (70%) and a bit warmer Tuesday, rain and snow likely (70%) at night,
• Mostly cloudy and a bit warmer with rain likely (70%) Wednesday through Thursday, then cloudy and a bit cooler with rain and snow showers likely (70%) Thursday night and Friday.
• snow level at the surface Tuesday, 4,500 ft. Tuesday night, 6,000 ft. Wednesday, 8,000 ft. Wednesday night and Thursday, 5,500 ft. Thursday night, then 4,500 ft. Friday.
• highs 33-43 cooling to 37 Friday lows 28-32 cooling back to 28 Thursday night.

 

 

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**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.

 

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Get your local Eugene-Springfield and Lane County news on-line at eugenedailynews.com.

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